You are not likely to get many answers (or funny stories) as these (with her sister Gemini) were operated by the merchant mariners of the CFAV, and while performing great services for the fleet, I have never run into any one of them that took any interest in military or defence matters.
These boats were never used for anything else than ferrying personnel from one side of the harbour to the other or bringing materiel, such as replacement fenders, to other harbour service boats working on various wharfs.
Assuming your friend wishes to transform her into his own pleasure craft, the forward cabin should provide him with ample space. Also, I have seen them carry load on their open decks that were quite heavy, so I think he would have no problem, if he is handy at working with fibreglass, building a little saloon over the after deck where the door to the forward cabin opens up. He has to be careful not to cover the engine room hatch however.
These are basically near flat bottom barges, so I hope your friend was not planning on taking her out of the harbour too often and then, only in good weather
. They should handle well, like any other twin screw boat, but I know they are highly susceptible to cross-winds: I have seen Gemini come alongside steering almost 30 degrees off the course she wished to steer in high winds.